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参数资料
| 型号： | ISL3241EIRZ-T |
| 厂商： | INTERSIL CORP |
| 元件分类： | Buffer和线驱动 |
| 英文描述： | QFN Packaged, ±15kV ESD Protected, +2.7V to +3.6V, 250kbps, RS-232 Transmitters/Receivers with Separate Logic Supply Pin; Temperature Range: -40°C to 85°C; Package: 32-QFN |
| 中文描述： | LINE TRANSCEIVER, PQCC32 |
| 封装： | 5 X 5 MM, ROHS COMPLIANT, PLASTIC, QFN-32 |
| 文件页数： | 16/16页 |
| 文件大小： | 549K |
| 代理商： | ISL3241EIRZ-T |
9
FN6768.1
May 13, 2010
ISL324xE monitor receivers remain active even during
manual powerdown, making them extremely useful for Ring
Indicator monitoring. Standard receivers driving powered
down peripherals must be disabled to prevent current flow
through the peripheral’s protection diodes (see Figures 5
and 6). This renders them useless for wake up functions, but
the corresponding monitor receiver can be dedicated to this
task as shown in Figure 6.
Low Power Operation
These 3V devices require a nominal supply current of
0.3mA, even at VCC = 3.6V, during normal operation (not in
power-down mode). This is considerably less than the 5mA
to 11mA current required by comparable 5V RS-232 devices,
allowing users to reduce system power simply by switching
to this new family.
Power-down Functionality
The already low current requirement drops significantly
when the device enters powerdown mode. In powerdown,
supply current drops to less than 1A, because the on-chip
charge pump turns off (V+ collapses to VCC, V- collapses to
GND), and the transmitter outputs three-state. Inverting
receiver outputs disable only in manual powerdown
details. This micro-power mode makes the ISL324xE ideal
for battery powered and portable applications.
TABLE 2. POWER-DOWN AND ENABLE LOGIC TRUTH TABLE (NOTE: “H” = VL)
RS-232
SIGNAL
PRESENT
AT
RECEIVER
INPUT?
SHDN OR
FORCEOFF
INPUT
FORCEON
INPUT
EN
INPUT
TRANSMITTER
OUTPUTS
RECEIVER
OUTPUTS
ROUTB
OUTPUTS
INVALID
OUTPUT
MODE OF OPERATION
ISL3241E
N/A
L
N/A
L
High-Z
Active
N/A
Manual Power-down
N/A
L
N/A
H
High-Z
Active
N/A
Manual Power-down w/Rcvr. Disabled
N/A
H
N/A
L
Active
N/A
Normal Operation
N/A
H
N/A
H
Active
High-Z
Active
N/A
Normal Operation w/Rcvr. Disabled
ISL3243E
NO
H
N.A.
Active
L
Normal Operation
(Auto Powerdown Disabled)
YES
H
L
N.A.
Active
H
Normal Operation
(Auto Power-down Enabled)
NO
H
L
N.A.
High-Z
Active
L
Power-down Due to Auto Power-down
Logic
YES
L
X
N.A.
High-Z
Active
H
Manual Power-down
NO
L
X
N.A.
High-Z
Active
L
Manual Power-down
FIGURE 5. POWER DRAIN THROUGH POWERED DOWN
PERIPHERAL
OLD
VCC
POWERED
GND
SHDN = GND
VCC
Rx
Tx
CURRENT
VOUT = VCC
FLOW
RS-232 CHIP
DOWN
UART
VCC
ISL3241E, ISL3243E
相关PDF资料 |
PDF描述 |
|---|---|
| ISL3243EIRZ | QFN Packaged, ±15kV ESD Protected, +2.7V to +3.6V, 250kbps, RS-232 Transmitters/Receivers with Separate Logic Supply Pin; Temperature Range: -40°C to 85°C; Package: 32-QFN |
| ISL3243EIRZ-T | QFN Packaged, ±15kV ESD Protected, +2.7V to +3.6V, 250kbps, RS-232 Transmitters/Receivers with Separate Logic Supply Pin; Temperature Range: -40°C to 85°C; Package: 32-QFN |
| ISL3293EFHZ-T | ±16.5kV ESD Protected, +125°C, 3.0V to 5.5V, SOT-23/TDFN Packaged, Low Power, RS-485/RS-422 Transmitters; Temperature Range: Full-Range Ind; Package: 6-SOT-23 T&R |
| ISL3293EIHZ-T | ±16.5kV ESD Protected, +125°C, 3.0V to 5.5V, SOT-23/TDFN Packaged, Low Power, RS-485/RS-422 Transmitters; Temperature Range: -40°C to 85°C; Package: 6-SOT-23 T&R |
| ISL3294EFHZ-T | ±16.5kV ESD Protected, +125°C, 3.0V to 5.5V, SOT-23/TDFN Packaged, Low Power, RS-485/RS-422 Transmitters; Temperature Range: Full-Range Ind; Package: 6-SOT-23 T&R |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL32430E | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:?±40V Fault Protected, 3.3V to 5V, ?±15V Common Mode Range, RS-485/RS-422 Transceivers With Cable Invert and ?±15kV ESD |
| ISL32430EIBZ | 功能描述:IC TRANSCEIVER 14-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:发射器 驱动器/接收器数:4/0 规程:RS422，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| ISL32430EIBZ-T | 功能描述:IC TRANSCEIVER 14-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:发射器 驱动器/接收器数:4/0 规程:RS422，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| ISL32430EIBZ-T7A | 功能描述:RS-422/RS-485 接口 IC 40V OVP 15V CMR -40+ 85 3V RS-485 FL DUP RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| ISL32430EIUZ | 功能描述:IC TRANSCEIVER 10-MSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:发射器 驱动器/接收器数:4/0 规程:RS422，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
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